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Angular momentum of a rigid body

  1. Sep 14, 2004 #1
    The angular momentum of a rigid body is often calculated in to different coordinate systems. One is an inertial system and the other is a body system moving with the rigid body. Now, in the body system the rigid body is at rest and has no movement at all. How is it that it can still have a non-zero angular momentum the body system.
  2. jcsd
  3. Sep 14, 2004 #2


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    Typically, the "system moving with the rigid body" is a system in which the center of mass is always at (0,0,0), not one that is rotating with the body!
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